*{
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
}
header{
    width: 800px;
    margin: 0 auto;
    border: 1px solid #000;
    display: flex;
    justify-content: space-between;
}
header .left{
    position: relative;
}
header .image{
    position: relative;
}
header .image > img{
    display: block;
    width: 300px;
    height: 400px;
}
header .image span{
    position: absolute;
    width: 150px;
    height: 200px;
    background-color: rgba(0, 0, 0, 0.329);
    left: 0;
    top: 0;
    display: none;
}
header ul{
    display: flex;
    justify-content: space-around;
    margin-top: 15px;
}
header li{
    width: 70px;
    border: 2px solid transparent;
}
header li.action{
    border-color: rgb(255, 192, 203);
}
header li img{
    display: block;
    width: 100%;
}
header .back{
    display: none;
    width: 300px;
    height: 400px;
    position: absolute;
    left: 300px;
    top: 0;
    border: 1px solid #000;
    background-image: url("../img/jisoo.jpg");
    background-size: 600px 800px;
    
}